How has bitcoin changed over the past 15 years?
As a seasoned professional in the world of cryptocurrency and finance, I'm fascinated by the remarkable evolution of Bitcoin over the past 15 years. Could you elaborate on how this digital currency has transformed, from its humble beginnings to its current status as a global phenomenon? Have there been significant changes in its value, adoption rate, or the underlying technology? What are some of the key milestones that have shaped its journey, and how do you see it evolving further in the coming years? I'm eager to gain a deeper understanding of this fascinating phenomenon.